Some months ago, I created two videos discussing various Network Devices. They are the first two videos of a 12 part series. I've just started working on video 9, and decided to review what I had already published.

In doing so, I couldn't help but realize how many common Networking questions are answered in the first two videos. To that end, I wanted to share them with this sub-reddit one more time.

• Part 1: https://www.youtube.com/watch?v=bj-Yfakjllc
• Part 2: https://www.youtube.com/watch?v=H7-NR3Q3BeI

These videos will properly frame pretty much everything else you need to learn for the CCNA. A lot of stress in learning Network Engineering comes from not seeing how one topic ties to the other (the industry calls this cognitive load). This prevents your brain from creating memory chains from topic to topic (known as memory synapses).

In any case, when I set out to create this entire series, it was based on the question: What do I wish someone had taught me when I first tried to learn Networking?. My answer to that question (also forged by the countless student's I've trained over the years) is in these first two videos.

In these videos, we discuss through these key points:

• Hosts are any device which sends or receive traffic
  • Clients and Servers
  • An IP Address is the identity of each host
• A Network is what transports traffic between Hosts
  • Logical grouping of hosts which require similar connectivity
  • Subnetworks, Subnets, LAN and WAN
• Repeaters regenerate signals
• Hubs are simply multi-port Repeaters
• Bridges sit between Hub-connected hosts
• Switches facilitate communication within a network
  • Switching
• Routers facilitate communication between networks
  • Routing, Gateways, Routes, Routing Table

A lot of you may be "beyond" these topics. Which, is great! Well done. I would still wager that seeing these possibly familiar topics explained in a cohesive narrative would still provide value as you continue your studying.

If anything, you likely have friends, family, co-workers wondering what it is you are studying or working with every day. These videos create the perfect looking glass into the world of Network Engineering.

In any case, I hope you enjoy this content. I put a lot of effort into creating it and I truly believe they will set you up for success as you start, or continue, your CCNA journey.